Dialysis Tube Lab
Steps:
- Place your “cell” on a tared scale and measure the mass in grams.
- Fill the 400 ml beaker ¾ full with tap water. Add 10 drops of Iodine solution and stir.
- Tie the second end of the tubing in an overhand knot and rinse it under the faucet. Set your “cell” on a clean surface.
- Dip a glucose test strip into the beaker. After 30 seconds, compare the color on the strip to the color chart Complete the table.
- Thoroughly rinse the graduated cylinder, shake dry, and measure 5 ml of glucose solution. Pour this into the tubing as well.
- Place the artificial cell into the beaker of solution and allow it to remain undisturbed for 30 minutes.
- Measure 5 ml of starch solution and pour it into the tube.
- Remove the tubing from the beaker and record the results in the data table for the final status of the solution and the mass of the bag.
- Tie one end of the tubing in an overhand knot
- Retest the solution in the beaker and in the bag with a new glucose test strip and record this data in your table.
- Remove the tubing from the water and open the tube and submerge it in water again for about thirty seconds.
- Place this tubing in a beaker and cover it with water. Soak it for 5 minutes
- Measure and cut 20 cm of dialysis tubing.
Materials:
- Glucose Solution
- Starch Solution
- Iodine Solution
- Glucose Test Strips
- Dialysis Tubing
- 400 ml Beaker
- 10 ml Granduated Cyliner
- Scissors
- Ruler
My Claims of the Lab
I believe that the Starch will become to large from expansion and will not be able to travel through the "membrane"
During the Lab, I believe that the Glucose will be able to move, since when Glucose is dissolved in water, it tends to attract water molecules.
I believe that the water will move at a slower rate(low concentration) due to the Glucose and Starch, but it will also move at a higher rate (high concentration) and go area to area.
I believe that the Iodine will move around at a higher concentration and cause a change of color in the water.